public void SendIdentifyBroadcast()
        {
            Trace.WriteLine("Sending identify broadcast", null);

            MemoryStream mem = new MemoryStream();

            //ethernet
            PhysicalAddress ethernetDestinationHwAddress = PhysicalAddress.Parse(RT.MulticastMACAdd_Identify_Address);

            Ethernet.Encode(mem, ethernetDestinationHwAddress, adapter.MacAddress, Ethernet.Type.VLanTaggedFrame);

            //VLAN
            VLAN.Encode(mem, VLAN.Priorities.Priority0, VLAN.Type.PN);

            //Profinet Real Time
            RT.EncodeFrameId(mem, RT.FrameIds.DCP_Identify_ReqPDU);

            //Profinet DCP
            DCP.EncodeIdentifyRequest(mem, ++lastXid);

            //Send
            Send(mem);
        }